In regards to your question, we manufacture various motor products which are typically used in industrial applications. In these types of applications, the noise specification is not a main consideration for the application. Furthermore, the noise generated may be dependent on the speed, load, and gearing of the motor. For these reasons, the dB rating of our motor products is not shown. Since this value is not shown, it would be difficult to compare your current BXS460C-A-3 system to one that would be quieter.